Clam-shell bucket.



LPATENTED JULY 9, 1907.

J. MOMYLER. ULAM. SHELL BUGKET. APPLICATION FILED 0012.29, 1906.

6 SHEETS-SHEET 1.

No. 859,240. 4 PATENTED JULY 9, 1907 J. MQMYLER.

GLAM SHELL BUCKET.

APPLIOATION FILED 0013.29, 1906.

6 $HEBTSSHEET 2.

Wgfnegg'g y, 1 276721 071 PATENTED JULY 9, 1907 J. MOMYLER. ULAM SHELL BUCKET. APPLICATION FILED 00120, 1000.

6 SHEETS-SHEET 3A [QM/46 7 XI 0 VLVWTIQMM Ji- 1 0 (PMw m 5 m 'N. I I

PATENTED JULY-Q1907.

J. McMYLI-JR. GLAM SHELL BUCKET.

AEPLIOATION FILED 0012 29, 1906.

6 SHEETS-SHEET 4.

m: 1mm

PATBNTED JULY 9, 1907,

J. MQMYLER.

CLAM SHELL BUCKET.

APPLICATION FILED OUT. 29

0 SHEETS-SHEET 5.

ne s s s o O l A 1 L .V my W PATENTED JULY 9, 1907.

J. MQMYLEEL SLAM SHELL BUCKET.

APPLICATION FILED OOT.29,1906.

6 SHBETS-SHEET 6.

- UNITED STATES EDENT orrron.

JQHN McMYLER, OF CLEVELAND, onro, ASSIGNOR TO THE McMYLERMANUFAOTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO,

GLAM-SHIELL BUCKET.

Specification of Letters Patent. Application file's October 29,1906. Serial No- 340,978.

' Patented July 9, 1907.

To all whom it may concern:

1 Be it known that 1, JOHN McMYLnR, a citizen ofthe United States, residing at Cleveland, in the county of Cuyahoga and State. of Ohio, have invented a certain new and useful Improvement in Olam-Shell Buckets, of whichthe following is a full, clear, and

exact description.

's The objectof this invention is to provide an efficient and durable clam shell bucket, adapted especially for use in picking up and transporting from one place to another, ore or analogous material.

The invention is shown in the drawing in. the best form now known to me; and may be here summarized as the combinations of parts hereinafter described, as definitely pointed out in the claims.

In the drawing, Figure 1 is a side elevation of the bucket when closed. Fig. 2 is a side elevation thereof when open. Fig. 3 is an end view of the bucket when closed. w 1

The head A is composed of a plurality of parallel metallic plates, the present instance four, indicated by a, a, a a, and 'a plurality of transverse 1 members, for example, the members I, J, K, L and M,

' and is connected with the ears-b thereof. Thelower whichhold the plates the required distance apart,

and connect them so as'to make a rigid structure.

B'B represent the two bucket jaw in the particular novel form shown in the drawing. These bucket jaws have no rear end wall; ea'chconsisting only of a bottom 6 and two parallel sides b '1) turned up from the bottom. The-top edge of each-side inclines upward froinboth ends thereof, and highest at a point midway between its ends,these'high middle parts serving as ears-forthe attachment of the suspension bam D D, and also to increase the holding capacity of the buckets. I

. Four suspension bars O O-'arepivoted to the head by being loosely'hung on the cross memberiM. The lower ends of two ofthese bars'C O are pivotally 'connected withtherear end of one bucket jaw, while the other two bars 0 O are pivotally connected with the rear end of the other jaw. This pivotal connection is obtainedby the following means, to witzears b are riveted or bolted to the side members of the bucket at the rear end thereof and along the inclined top edge. A shaft E, associated with each jaw, extends between endsjof the'snspension bars 0 C loosely embrace these shaftsE respectlvely. Two pairs of other suspension bars D D ireely hang from the transverse'head member Kfbeing therebyFpivoted to said head, and the lower ends of these'two bars are pivotally connected with the-sidesoi one" of the bucket jaws B. The other two bars'D- D are also hung from the'head. -The pair of suspension bars D are hung from the corresponding there are two pairs of such sheaves mounted on each of these shafts. There are three guide plates P respectively associated with each pair of said sheaves N. One of the plates lies between the sheaves of the pair, and the other two guide plates liebutside ofthe sheaves of the pair; and these three guide plates are connected together by the rods p p which hold the plates close to the faces of said sheaves. The plates P serve two functions, viz: they guide the ropes W W which pass around the sheaves N or N, so as to'keep the ropes out of contact with eachother and to direct them to the proper sheave; and they, or rather the rods p which connect their rear ends, prevent the ropes from flying out of engagement with the sheaves.

What may be termed the front ends oi each setof plates are connnected by tie rods p, and the horizontal reaches of the ropes W W engage with said pins, and thereby the plates P are prevented from rotating upon the shafts 'GG, that is to say the upper horizontal reaches of said rope engage with the top of theupper pins p, while the lowerreaches of said ropes engage with lower surfaces of the lower pins.

A block Q is movably mounted in the head A. Th'm block lies loosely between the two center plates 0., a and has grooves in-its sides which" embrace vertical ribs (1* on the inner face of said plates. This block may therefore move up andgdown but guided in said movements. 7 Two arms Tare respectively pivoted to opposite endsoi this block, and their lower ends is spectively embrace two shafts G G.

A chain or rope R is attached atlits ends to two rings 7', which respectively embracoloosely the two shafts G G, and-this chain is of such length that when the bucket jaws are open, asshownin Fig. '2, as far as it is desired to have them, this chain'is straightened out and prevents any further opening movement of said jaws. The middle part of this chain is connected with another piece of chain or rope, or equivalent device r,

.and thenpperend of this dbvicc is connected with said vertically movable block Q, and this prevents the chain R from dropping down into or between the jaws.

The ropes S and S, by means oi which the bucket jaws may be opened, are respecgively niadefast tothe two head members Kand L. These ropes, irolntheir said points of connection, pass around sheaves a loosely connected thereto.

mounted on the two shafts 'E E and thence up in contact with other sheaves U mounted upon'th head A; or to" more particularly describe the specific form. of supports for these sheaves, as shown, each consists of a pair of plates Y; which are respectively hung loosely on the transverse head members K and L. Each pair of plates is connected by a tie rod y; and each sheave U lies between the plates ofa pai'r and is rotativel'y There are two closing ropes W and W. The rope W may be secured. at one end to the head member M. From this point it passes around a sheave N onithe shaft G, thence around a sheave N on the shaft G back around another sheave N on theshaft G and then around another sheave N on the shaft G, and thence up in engagement with a sheave V rotatably mounted on the transverse head member I. The other closing rope i is fastened at one end'tothe head member M and then passes similarly back and forth over the sheaves N on the two shafts G and'G and'thcnce up in contact with a sheave rotatably mounted on the head member J. By slackening the ropes W W-, and taking in the ropes S S, the bucket jawswill be drawn open as faras the lhainR will permit. Block Qwill move down during this operation. thereby helping to open the bucket. To close the bucket, the ropes S S Y are allowed to slacken; the two ropes W W are taken up, thereby drawing the two shaits G G toward each other, which results in closing the buc ket. If the front edges of the two bucket jaws become bent or battered, or'bfifkenfthe ears I; may be taken from the rear end of said jaws a'nd secured to the other end thereof; the rivet or Ibolt holes b for this purposeheing shown. Then said bucket jaws may be turned around and again connected. with the lower ends of the sus-, pension bars D an d Cl. By this means the rear end of the bucket will'beoome the front end, This characteristic of construct namely, making the two ends of the bucket jawsfalike, and. connecting e suspension bars D with th'e middle of the bucket}. together with; the provision of means oi'transforringthe ears b iror'done end of the bucket to the other, will enable tlwstructure to last about half as long again as buckets heretofore constructed 1 which did not employ the revcrsible jaws; I v .if h y It will be understood that iu'liiany respects the particular construction shown may be modified without departing from the invention; the essential charactoristics of which are defined and definitely pointed out in the claims. 7 I v A modified construction is shown in Figs/i, 5 and 6,--Fig. 4 being a side .view with the bucket jaws closed; Fig. 5 a similar view with the bucket jaws? open, and Fig." 6 a plan view. The modified construction shown in these figures resembles the form shown in Figs. 1, 2 and 3 in most particulars, The. form oi bucket jaw however, ,is different; and the suspension bars 1) D are connected at their lower ends to the bucket jaws near the front ends thereof instead of at the mid 'l as in the other construction. The guide plates I, which lie between the sheaves N, are held in operative position by means different irom the means suspended horn the'heagl','" andtheir lower ends are pivotally connected with the mindse s said plates. As the bucket jaw aope n and close, there willlbe a slight; rotation 0'! the shafts G Gv'iithi1 1 .saidplateflbutjneverthelessfth plates will be so heldby said bars Q; thbti in all positions of the jaws a ight line will pan through'the air espf theshaitsG and of the pivots by which bars Oare connected with said plirtesf ln'the modified form sho onl y one'closing'trope is employed! 'Two strands was: the rope pass down 76 through the head in coiitact with the guide sheaves and the bight 6: this rope is run back ailerons ime sheaves .N N inounted on shafts G G4. ll'rere are, therefore, only'one-setof s heaves'N iand- -oneiset 0t sheaves N,- th'ere being three sheaves iii'each all other respects the bucketshpwn in tjl'ie last large;- figures is substantially likethat shown e' first three figures; and the partithei'eofare ind by i i which are suspended from suld head and are plvotally'eonnected at their lower ends with then-en ends of thobucht Jaws respectively, thesuspenslon bursD' D which ure IIIYIO lul pended from said head and which respectively cross the bars (I (3' and are plvotully connectdnt thelr'lower' endl wlth the bucket Jaws respectively at .pdlntsmildwnj be tween the ends of sold bucket jaws,v and mechunilinfpl opening {ind closing sold bucket jaws.

-2. ln a cmm shell bucket,'thecornblnatlcn oi. gland,

and two bucket jnwsywlth the suspension bar'sC'Q'Ytillichfl are suspended from sold head und are pivo'tnllyconliected at their lower ends with the real-ends of the,bueket 411" pended fronif suld head and which respectively cr'oultha' bars C C andv are plvotnliy consumes: their lower o hdl with the bucket Juws respectively ut points midway between the'ends of sold bucket jaws,', each bucket jlwbelnl. I substantially ullkn on opposiic sides at the transver a respectively, the suspension bars I) l) which MQgllhldjlll- 100 ets by melins or which cars at either end thereof. 4. hi :1 clam shell bucket, the comblnatiouot 'a head, j

and two bucket Jaws, ears secured to the sides rot mid bucket Jaws ut the rear end thereof. which m -as ure me ble 0! being similarly connected with said sl lou uonr the front end thereof, wlth twopnlrs of quip" normn B, Home l'nufcr'cndl whl ch re suspended trom'snld hem! nudz'lw nro respectively pivoted to the two but-lust jaws; I f I midway between the ends thereof. other sus Fifsjo i C C which nre respectively pivm-d tmjlu: curs on bucket and m plvotally suspended frmifiiilgj no:

common axis, and mean for openlng uiul bucket Juwsu i 1 5. In a clum shell bucket, the combllmilo two buckefl jnws und suspension burs hung! h'cud and plvotully connectedwith said Micki-t nw wlth in chain vsuitably connccte d ut, its ondn wltliisn'lll 'luir'ln-i fjaws, and mechanism for opening und cloning sulduuuskcl.

' Nl35 6. In n clr im' shsll buckctftlu: -i.'omblnn ilon of a l1e ud,, 'two bucket jaws. and suspension bars lumglng from mild Judd and pivotally' connected with said bucket jaws. with I clmlnsultublg{aga nst-toil ut its ends'wlth nuldbllcket i'rnlplovcd in the other form to witytwo bars 0 O are jaws, and mccl'uuilsin tor opening and closlng suld bucket,

jaws respectively, a sheave on each of the shafts E E,

opening ropes' connected at the head and passing around said sheaves respectively, and thence upward.

8. 1am clam shell bucket, the combination of a head, two bucket jaws, suspension bars'pivotally connected with the head and with said bucket jaws respectively, shafts G G supported by some of said suspension bars and associated respectively with the two bucket jaws, sheaves mounted upon said shafts, guide plates upon said shafts close' to -the sides of said sheaves, and means preventing the rota;

tion of said guide plates upon said shafts. I

9. In a clam shell bucket, thecomblnation of a head, two bucket Jaws, suspension bars pivotaliy connected with the head and with said bucket jaws respectively, shafts G G supported by some of said suspension bars and associated respectively with the two bucket jaws, sheaves mounted upon said shafts, guide plates upon said shafts close to the sides of said sheaves, means connecting the rear sides of said plates in each set behind the associated sheaves, and means preventing the rotation of said plates upon said shafts.

10. In a clam shell bucket, the combination of a head, two bucket jaws, suspension bars pivotally connected with the head and with said bucket Gsupported by some of said suspension bars and associated respectively with the two bucket jaws, sheaves mounted upon said shafts, guide plates upon said shafts close to the sides of said sheaves, meanscohnecting the rear side of the plates in each set behind the sheaves, two rods connecting the front ends of each set of plates and located respectively near the top and bottom thereof, and a closing rope which passes back and forth around said sheaves and between said plates,-'.the horizontal reaches of said rod being outside of the last mentioned rods and in engagement therewith.

In testimony whereof, I hereunto .aflix my signature in the presence of two witnesses.

JOHN. MCMYLER.

Witnesses E. B. GILCI-IRIST, II. R. SULLIVAN.-

jaws respectively, shafts Gr 

